Earth Science

Human Impacts on the Earth’s Environment

Global Warming

Study Tip
Think about greenhouse gasses as a large blanket. It traps warmth and keeps it from escaping.

Global Warming

  • Global warming is the gradual warming of the Earth due to the trapping of greenhouse gasses primarily released by human activity.
  • The rate that temperature has been increasing has been greatest within the past century.
  • The 2000s have been the warmest decade recorded.
  • Gases such as carbon dioxide enhance the greenhouse effect and causes global temperature to increase.

Changes

  • The timing for the events of species is changing.
  • For instance, mating and migrations take place earlier in the spring months due to the changing temperatures.
  • Sea levels are rising due to the ice caps melting.
Study Tip
Think about greenhouse gasses as a large blanket. It traps warmth and keeps it from escaping.
global temperatures chart
The global temperatures continue to
rise as global warming occurs.
Concept Check
  • How does the Earth’s temperature change due to global warming?
  • What other effects does global warming have on the Earth?